A stress fracture is a thin, or hairline, crack in a bone. A stress fracture usually happens from repeated pressure on the foot, like running or jumping. You may need 6 to 8 weeks to heal.
Treatment depends on where the fracture is and how much pain it causes. Do not return to your usual exercise until your doctor says you can. Continued use of an injured foot can make the break worse or keep it from healing.
You heal best when you take good care of yourself. Eat a variety of healthy foods, and don't smoke.